Looks like a really nice covering job. Post a photo with the wing on when completed. I have been flying the GP .60 for ten or twelve years with an OS .90. I would probably not recommend as a second plane either, but it is definitely not that hard to fly. The wood is very thin to keep light so the plane is very fragile in places. The ABS parts were pretty junky so I would get fiberglass cowl and wheel pants. I have ripped the landing gear off several times so I use nylon bolts to hold in place. The bolts break off rather than tearing the wood. I think I am using a wood 14X6 prop
good luck
belairbob